Air tightness detection tool for upper cover of automobile battery box body

Abstract

The utility model discloses an automobile battery box body upper cover air tightness detection tool comprising a pedestal, the top of the pedestal is provided with a base layer plate, the top of the base layer plate is used for placing a battery box body upper cover, the periphery of the base layer plate is provided with circumferential pressing assemblies, and the circumferential pressing assemblies are used for pressing the battery box body upper cover on the top of the base layer plate. A first sliding rail is arranged at the front end of the base in the length direction, a first sliding block is installed on the first sliding rail in a sliding mode, the circumferential pressing assembly at the front end of the base layer plate is fixedly installed on the first sliding block, and the circumferential pressing assembly at the front end of the base layer plate can be driven to be close to or away from the base layer plate by driving the first sliding block to slide on the first sliding rail. Compared with the prior art, the tool has the advantages that the circumferential pressing assembly on one side is installed in a sliding mode, self-adaptive adjustment can be carried out on battery box body upper covers with the same width but different lengths, the situation that one product can only correspond to one tool is avoided, and the production and manufacturing period and cost are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle batteries, in particular to an air tightness detection tool for an upper cover of a vehicle battery box. Background Art

[0002] As a key component of new energy vehicles, new energy batteries directly provide a source of power. Therefore, the quality of the batteries can directly impact the overall usability of the vehicle. Physically, new energy batteries consist of a battery case and battery packs stacked within it. To ensure the safe and stable operation of the entire battery, the sealing of the battery case is crucial. This sealing is primarily determined by the battery case cover, so the battery case cover must undergo airtightness testing before use.

[0003] In the existing technology, the air tightness test of the battery box cover is mainly carried out by opening a groove in the base plate and embedding a sealing strip in the groove. The cover is then placed in the groove and compressed by a cylinder. Finally, air is ventilated into the groove and the air tightness of the cover is determined by the measured air pressure data. However, there are many types of new energy vehicles currently, and the corresponding cover specifications and models are also different. This means that each type of cover needs to be designed and customized with air tightness test tools, which not only prolongs the entire production design cycle but also increases production costs. Utility Model Content

[0004] In view of this, the utility model provides an automobile battery box upper cover air tightness detection tool, which is intended to be adaptable to various types of upper covers, thereby reducing production costs and processing time.

[0005] To achieve the above purpose, the technical solution of this utility model is as follows:

[0006] A tool for testing the air tightness of the upper cover of an automobile battery box comprises a base, a base plate is provided on the top of the base, the top of the base plate is used to place the upper cover of the battery box, circumferential pressing components are provided on all four sides of the base plate, and the circumferential pressing components are used to press the upper cover of the battery box on the top of the base plate, characterized in that a first slide rail is provided at the front end in the length direction of the base, a first slider is slidably mounted on the first slide rail, the circumferential pressing component at the front end of the base plate is fixedly mounted on the first slider, and driving the first slider to slide on the first slide rail can force the circumferential pressing component at the front end of the base plate to approach or move away from the base plate.

[0007] By adopting the above structure, the circumferential clamping assembly on one side is installed by sliding, and adaptive adjustment can be made for each battery box cover with the same width but different length dimensions, thereby avoiding the situation where one product can only correspond to one tooling, effectively reducing the production cycle and cost.

[0008] Preferably, the circumferential pressing assembly includes a first vertically arranged cylinder, the end of the cylinder rod of the first cylinder being provided with a connecting seat, the connecting seat being rotatably connected to a rotating rod, the distal end of the rotating rod being provided with a first pressing plate, the first cylinder being provided with a first mounting seat, the first mounting seat being rotatably connected to the rotating rod by a guide rod, the first cylinder being lifted, forcing the rotating rod to rotate and causing the first pressing plate to press downward on the battery case cover. The above structure enables the battery case cover to be circumferentially tightly attached to the base plate, thereby facilitating airtightness testing of the battery case cover.

[0009] Preferably, the battery pack further includes a top pressing assembly comprising a crossbeam extending transversely across the width of the base, a second cylinder disposed on the crossbeam, and a second pressure plate disposed at the lower end of the cylinder rod of the second cylinder. Driving the second cylinder forces the second pressure plate to press downward on the battery case cover. Both ends of the crossbeam are provided with downwardly extending mounting posts, each slidably mounted on the base. Multiple top pressing assemblies are arranged along the length of the base. This structure prevents the cover from bulging and deforming during inflation.

[0010] Preferably, the base is provided with second slide rails along the length direction on both sides, and the two second slide rails are provided with second sliders, and the mounting post is fixedly mounted on the top of the second sliders. The above structure can ensure that the top pressing assembly can be slidably installed, and the operation is very convenient.

[0011] Preferably, a positioning structure is provided between the frontmost top pressing assembly and the base, and a connecting rod is provided between any two adjacent top pressing assemblies. With this structure, the positioning structure allows for better positioning and installation of the top pressing assemblies, while the connecting rod ensures that the top pressing assemblies are evenly distributed on the top of the battery case cover, preventing bulging of the battery case cover.

[0012] Preferably, the positioning structure includes a positioning block disposed at the front end of the second slide rail, the top of the positioning block being provided with a positioning hole. A forward-extending positioning rod is mounted on the second slider located at the front end of the second slide rail, the front end of which is provided with a spring pin, the bottom of which is capable of being inserted into the positioning hole. This structure positions and locks the second slider, effectively preventing it from sliding when the top pressing assembly presses the top of the upper cover.

[0013] Preferably, the base plate is provided with a plurality of rectangular annular grooves, each having a different length but the same width and sharing a common wide edge. A sealing strip is provided within each of the annular grooves, the upper end of which protrudes beyond the top of the base plate, and the battery case cover circumferentially abuts against the top of the sealing strip. This structure ensures a tight seal between the cover and the base plate, thereby ensuring accurate testing. It also accommodates battery case covers of various lengths.

[0014] Preferably, a third cylinder is provided at the front end of the base, the cylinder rod of which is connected to the first slider. Driving the third cylinder forces the first slider to slide on the first slide rail. A buffer block and a first stop block are provided on the base near the rear end of the first slide rail. This structure enables the circumferential clamping assembly at the front end of the base to automatically adjust the distance from the base plate, and the buffer block and first stop block also provide a buffer and limit function for the sliding of the first slider.

[0015] Preferably, the base is provided with an adjustment assembly on the side thereof, the adjustment assembly being connected to the air pipe of the third cylinder, and the adjustment assembly having a knob, which can be turned to control the extension or retraction of the cylinder rod of the third cylinder. With the above structure, the product model can be switched.

[0016] Preferably, a second limiting block is provided on the top of the base plate in a circumferential direction, and the second limiting block is used to limit the position of the battery box cover. The above structure can facilitate the positioning and placement of the battery box cover.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The automobile battery box upper cover air tightness detection tool provided by the utility model adopts a sliding installation method for the circumferential pressing component on one side, so that adaptive adjustment can be made for each battery box upper cover with the same width but different length dimensions, thereby avoiding the situation where only one tool can be used for one product, and effectively reducing the production cycle and cost.

[0019] 2. There are multiple groups of top pressing components, which slide back and forth on the slide rails through sliders. While facilitating operation by staff, the corresponding number of top pressing components can be selected according to the specific size of the battery box cover, thereby ensuring that the top of the battery box cover will not bulge or deform during the air tightness test.

[0020] 3. The top pressing assembly is positioned through positioning holes and spring pins, with high positioning accuracy and easy operation by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of the three-dimensional structure of the air tightness testing tool for the upper cover of the automobile battery box;

[0022] Figure 2 This is a schematic diagram of the structure of the vehicle battery box cover air tightness test tool (top view);

[0023] Figure 3 To show the structural diagram of the back end of the air tightness testing tooling;

[0024] Figure 4 Schematic diagram of the structure of the circumferential pressing assembly 3;

[0025] Figure 5 It is a cross-sectional schematic diagram of the airtight tooling;

[0026] Figure 6 for Figure 5 A partial enlarged view of middle A;

[0027] Figure 7 A structural diagram showing the installation position of the third cylinder 9;

[0028] Figure 8 is a structural diagram of the positioning structure;

[0029] Figure 9 A schematic diagram showing the structure of the base plate 2;

[0030] Figure 10 A schematic diagram showing the structure of the stacking method of the second pressing plate 6f;

[0031] Figure 11 It is a structural diagram showing the arrangement of the first slide rail 4. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0033] The directional words used in this embodiment are all Figure 1 The direction indicated by the coordinate system shall prevail.

[0034] like Figure 1 、 Figure 2 and Figure 5As shown, a tool for testing the air tightness of the upper cover of an automobile battery case includes a base 1. A base plate 2 is fixedly mounted on the top of the base 1. The top of the base plate 2 is used to place the upper cover 17 of the battery case. An air inlet 2b is provided in the middle of the bottom of the base plate 2. After the upper cover 17 of the battery case is fixedly covered on the base plate 2, air is ventilated into the enclosed space formed between the base plate 2 and the upper cover 17 through the air inlet 2b, thereby enabling the air tightness test of the upper cover 17 of the battery case. Circumferential pressing assemblies 3 are installed on all four sides of the base plate 2. In this embodiment, nine circumferential pressing assemblies 3 are installed on the left and right sides of the base plate 2, and five circumferential pressing assemblies 3 are installed on the front and rear ends of the base plate 2. Each circumferential pressing assembly 3 is used to press the circumferential edge of the upper cover 17 of the battery case against the top of the base plate 2.

[0035] like Figure 1 and Figure 11 As shown, in this embodiment, five first slide rails 4 are fixedly installed at the front end of the base 1. The five first slide rails 4 are parallel to each other and arranged along the front and rear direction of the base 1. A first slider 5 is slidably installed on each first slide rail 4. The five first sliders 5 are connected as a whole through a connecting plate 18. The five circumferential clamping components 3 located at the front end of the base plate 2 are respectively fixedly installed on the connecting plate 18 through a second mounting seat 19. Driving the first slider 5 to slide on the first slide rail 4 can drive the circumferential clamping component 3 at the front end of the base plate 2 to approach or move away from the base plate 2.

[0036] With this design, for the battery box cover 17 with roughly the same structure and width but inconsistent length dimensions, it is only necessary to slide the first slider 5 back and forth to move the circumferential pressing assembly 3 at the front end of the base plate 2 to a position that is adapted to the length dimension of the battery box cover 17. This can ensure that the battery box cover 17 is circumferentially pressed against the top of the base plate 2, thereby facilitating the airtightness test of the battery box cover 17. Compared with the traditional method where one product can only correspond to one tooling, this effectively reduces the production cycle and cost.

[0037] like Figure 4As shown, the circumferential compression assembly 3 includes a first cylinder 3a fixedly mounted on the base 1. The first cylinder 3a is arranged vertically. A connecting seat 3b is fixedly mounted on the end of the cylinder rod of the first cylinder 3a. A rotating rod 3c is rotatably mounted on the top of the connecting seat 3b. A first pressure plate 3d is fixedly mounted on the far end of the rotating rod 3c. A first mounting seat 3e is also fixedly mounted on the top of the cylinder body of the first cylinder 3a. A guide rod 3f is rotatably connected between the first mounting seat 3e and the rotating rod 3c. When the first cylinder 3a is lifted, it is restricted by the guide rod 3f, which can force the rotating rod 3c to rotate toward the base plate 2, and the first pressure plate 3d presses down on the edge of the battery box cover 17, thereby ensuring that the base plate 2 and the battery box cover 17 can fit tightly together, facilitating the airtightness test of the battery box cover 17.

[0038] like Figure 3 As shown, the airtightness testing tool also includes a top pressing assembly 6, which includes a crossbeam 6d arranged horizontally in the width direction of the base 1. A second cylinder 6e is fixedly mounted on the crossbeam 6d. In this embodiment, two second cylinders 6e are fixedly mounted on the crossbeam 6d. The lower end of the cylinder rod of each second cylinder 6e is fixedly mounted with a second pressure plate 6f. Driving the second cylinder 6e can force the second pressure plate 6f to press the battery box cover 17 downward. Downward-extending mounting posts 6c are provided at both ends of the crossbeam 6d. The mounting posts 6c at both ends are slidably assembled on the base 1. In this embodiment, second slide rails 6a are formed on both sides of the base 1 along the length direction. Second sliders 6b are slidably assembled on the two second slide rails 6a, and the mounting posts 6c are fixedly mounted on the top of the second slider 6b. In addition, in this embodiment, eight groups of top pressing assemblies 6 are provided, which are arranged along the length direction of the base 1. Eight second sliders 6b are slidably assembled on the corresponding single second slide rails 6a. Such a design can prevent the top of the battery box upper cover 17 from bulging during the airtightness test. At the same time, the corresponding number of second sliders 6b can be selected according to the different sizes of the battery box upper cover 17 to ensure that the top of the battery box upper cover 17 can be covered by the second pressure plate 6f, thereby preventing the top of the battery box upper cover 17 from bulging.

[0039] like Figure 5 and Figure 10 As shown, in this embodiment, the mounting posts 6c mounted on the second slider 6b on the same side are in an undulating posture. This design can ensure that when the second cylinder 6e contracts, the second pressure plates 6f are stacked and placed to avoid mutual interference.

[0040] Further, such as Figure 8As shown, a positioning structure is installed between the top pressing assembly 6 at the front end and the base 1. The positioning structure includes a positioning block 13 fixedly mounted at the front end of the second slide rail 6a. A positioning hole 13a is formed at the top of the positioning block 13. A forward-extending positioning rod 14 is mounted on the second slider 6b at the front end of the second slide rail 6a. A spring pin 15 is vertically mounted at the front end of the positioning rod 14, and the bottom of the spring pin 15 can be inserted into the positioning hole 13a. This design can position and lock the second slider 6b and effectively prevent the second slider 6b from sliding when the top pressing assembly 6 presses the top of the battery case cover 17.

[0041] like Figure 3 As shown, any two adjacent top pressing assemblies 6 are connected by a connecting rod 7, which ensures that the second sliders 6b are evenly arranged. In this embodiment, the connecting rods 7 are alternately arranged on both sides of the base 1 to ensure that only one connecting rod 7 is connected to each second slider 6b.

[0042] like Figure 5 、 Figure 6 and Figure 9 As shown, multiple rectangular annular grooves 2a are formed on the top of the base plate 2. Each annular groove 2a has a different length but the same width and shares a common wide side. A sealing strip 8 is installed in the annular groove 2a. The upper end of the sealing strip 8 protrudes beyond the top of the base plate 2. The circumference of the battery case cover 17 is closely attached to the top of the sealing strip 8. The sealing strip 8 further ensures a tight fit between the base plate 2 and the battery case cover 17. Different annular grooves 2a correspond to battery case covers 17 of different lengths. A filler 23 is also installed on the top of the base plate 2. The filler 23 can provide support for the central portion of the battery case cover 17.

[0043] In addition, if Figure 6 and Figure 9 As shown, a second limiting block 16 is fixedly installed on the top circumference of the base plate 2. The second limiting block 16 is used to limit the battery box cover 17 and also facilitates the positioning and installation of the battery box cover 17.

[0044] like Figure 7 and Figure 11As shown, a third cylinder 9 is fixedly installed at the front end of the base 1. The third cylinder 9 is arranged parallel to the first slide rail 4, and the cylinder rod of the third cylinder 9 is connected to the connecting plate 18. Driving the third cylinder 9 can force the first slider 5 to slide on the first slide rail 4, thereby adapting to the air tightness test of the battery box cover 17 of different lengths. A buffer block 10 and a first limit block 11 are provided at the rear end of the base 1 near the first slide rail 4. The buffer block 10 can prevent the first slider 5 from sliding too fast and damaging the equipment, and the first limit block 11 can limit the sliding of the first slider 5. In this embodiment, the buffer block 10 is fixedly installed on the oil pressure buffer, and the first limit block 11 is a travel switch.

[0045] For example Figure 7 As shown, an adjustment assembly 12 is fixedly mounted on the side of the base 1. The adjustment assembly 12 is connected to the third cylinder 9 via an air pipe. A knob 12a is provided on the top of the adjustment assembly 12. Turning the knob 12a controls the extension or retraction of the cylinder rod of the third cylinder 9, thereby switching the product model. In this embodiment, the adjustment assembly 12 is a solenoid valve.

[0046] like Figure 2 and Figure 3 As shown, a regulating valve 20 and a solenoid valve 21 are fixedly installed at the rear end of the base 1, wherein the regulating valve 20 is used to adjust the air intake of the entire tooling, and the solenoid valve 21 is used to control the extension and retraction of each cylinder. An operating box 22 is fixedly installed on the front end side of the base 1, and each cylinder can be easily operated through the operating box 22.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A tool for testing the air tightness of an automobile battery box cover, comprising a base (1), a base plate (2) provided on the top of the base (1), the top of the base plate (2) being used to place the battery box cover, a circumferential pressing assembly (3) being provided around the base plate (2), the circumferential pressing assembly (3) being used to press the battery box cover against the top of the base plate (2), and characterized in that: A first slide rail (4) is provided at the front end of the base (1) in the longitudinal direction, a first slider (5) is slidably mounted on the first slide rail (4), and a circumferential pressing assembly (3) at the front end of the base plate (2) is fixedly mounted on the first slider (5). By driving the first slider (5) to slide on the first slide rail (4), the circumferential pressing assembly (3) at the front end of the base plate (2) can be forced to move closer to or away from the base plate (2).

2. The vehicle battery box upper cover air tightness detection tool according to claim 1, characterized in that: The circumferential pressing assembly (3) includes a first cylinder (3a) arranged vertically, a connecting seat (3b) is provided at the end of the cylinder rod of the first cylinder (3a), the connecting seat (3b) is rotatably connected to a rotating rod (3c), a first pressing plate (3d) is provided at the far end of the rotating rod (3c), a first mounting seat (3e) is provided on the first cylinder (3a), a guide rod (3f) is rotatably connected between the first mounting seat (3e) and the rotating rod (3c), and the first cylinder (3a) is lifted to force the rotating rod (3c) to rotate, and the first pressing plate (3d) presses the upper cover of the battery box downward.

3. The vehicle battery box upper cover air tightness testing tool according to claim 1, characterized in that: The invention also includes a top pressing assembly (6), which includes a crossbeam (6d) arranged transversely in the width direction of the base (1), a second cylinder (6e) being provided on the crossbeam (6d), a second pressing plate (6f) being provided at the lower end of the cylinder rod of the second cylinder (6e), and driving the second cylinder (6e) to force the second pressing plate (6f) to press the upper cover of the battery box downward; downwardly extending mounting columns (6c) are provided at both ends of the crossbeam (6d), and the mounting columns (6c) at both ends are slidably assembled on the base (1); there are multiple top pressing assemblies (6), which are arranged along the length direction of the base (1).

4. The vehicle battery case upper cover air tightness testing tool according to claim 3, characterized in that: Second slide rails (6a) are provided on both sides of the base (1) along the length direction, and second sliders (6b) are provided on the two second slide rails (6a). The mounting column (6c) is fixedly arranged on the top of the second slider (6b).

5. The vehicle battery box upper cover air tightness testing tool according to claim 4, characterized in that: A positioning structure is provided between the top pressing assembly (6) located at the front end and the base (1), and a connecting rod (7) is provided between any two adjacent top pressing assemblies (6).

6. The vehicle battery box upper cover air tightness testing tool according to claim 5, characterized in that: The positioning structure comprises a positioning block (13) arranged at the front end of the second slide rail (6a), a positioning hole (13a) is provided on the top of the positioning block (13), a positioning rod (14) extending forward is installed on the second slider (6b) located at the front end of the second slide rail (6a), a spring pin (15) is vertically provided at the front end of the positioning rod (14), and the bottom of the spring pin (15) can be inserted into the positioning hole (13a).

7. The vehicle battery box upper cover air tightness testing tool according to claim 1, characterized in that: The base plate (2) is provided with a plurality of rectangular annular grooves (2a), each annular groove (2a) having a different length but the same width and sharing a common wide side, a sealing strip (8) is provided in the annular groove (2a), the upper end of the sealing strip (8) protruding beyond the top of the base plate (2), and the battery box upper cover is circumferentially in close contact with the top of the sealing strip (8).

8. The vehicle battery box upper cover air tightness testing tool according to claim 1, characterized in that: A third cylinder (9) is provided at the front end of the base (1), and a cylinder rod of the third cylinder (9) is connected to the first slider (5). Driving the third cylinder (9) can force the first slider (5) to slide on the first slide rail (4); The base (1) is provided with a buffer block (10) and a first limiting block (11) at a position close to the rear end of the first slide rail (4).

9. The vehicle battery box upper cover air tightness testing tool according to claim 8, characterized in that: The base (1) is provided with an adjustment component (12) on the side thereof. The adjustment component (12) is connected to the air pipe of the third cylinder (9). The adjustment component (12) has a knob (12a). By rotating the knob (12a), the cylinder rod of the third cylinder (9) can be controlled to extend or retract.

10. The vehicle battery box upper cover air tightness testing tool according to claim 1, characterized in that: A second limiting block (16) is provided circumferentially on the top of the base plate (2), and the second limiting block (16) is used to limit the upper cover of the battery box.

Images